US2305572A - Rotary operative fastener device and installation of the same - Google Patents

Description

Dec. 15, 1942. F. E. JOHNSON 2,305,572

ROTARY OPERATIVE FASTENER DEVICE AND INSTALLATIONS OF THE SAME Filed July 3, 1941 2 Sheets-Sheet l Invenior:

Frank E". Jo 22260 n.

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Patented Dec. 15, 1942 no'rAaY ornna'rrvn rss'rnnsa nnvion AND msraua'non or nn same Frank E. Johnson, Maiden, Mala, assignor to I United-Carr. Fastener Corporation, Cambridge, Mesa, a corporation of Massachusetts,

Application July 3, 1941, Serial no. 400,936

10 Claims. (01. 25-221) This invention aims to provide improvements in fasteners for securing together two or more members preferably plate-like, the fasteners being of, the so-called rotaryoperative type, and being adapted to lock the plate members against any appreciable movement away from each other.

My invention is directed particularly to imprcvements in a fastenerdevice intended to se- Fig. 2 is a rear viewof the installation shown in Fig. 1; 1

1 Fig. 3 is a front view of one of the apertured I members carrying a springmemberailapteda for cure two or more apertured members together in face-to-face relation and operating in a way to' prevent any movement of the plates in a direction flatwise away from each other when the parts of the fastener device are in vfull locked relation. Broadly, the fastener includes a rotary stud unit having a head on the outside of the apertured members and a shank extending through the members. The shank has a pair of lateral pro-. jections which are in spaced relation axially of the shank. One of the projections overlies the inner surface of the inner aperturedmember when the stud is turned to fastening position, thereby to hold all of the apertured members in closeface-to-face engagement. The other projection cooperates with a spring element lo cated at the inner face of'the installation to hold the stud unit in fastening position while permitting release by positive rotation of the stud. My fastener device is particularly useful when used on airplanes having .a' high rate of. speed as it operates to resist movement of the plates flatwise away from each other as a result of a. flow of air entering between the plates..'

One of the objects of my invention relates to the construction of the rotary stud unit, wherein the projecting element which is disposed nearest the stud head to engage the inner apertured member is assembled with the stud by a novel method after the stud shank, carrying the other projecting element, is extended through the out side apertured member. Another object of my invention relates to the cooperation with the stud unit to mews parts in locked relation;

Fig. 41s a rear view of the stud unit of my first form of fastener in assembly with the outer part to be secured; I d

Fig. 5 is aside elevation of the combination I I shown in Fig.4;

Fig.6 is a sectional view taken on the line s-s of Fig. 2;

. in Fig. 12;

Fig; 7 is a sectionalview taken on the line 1-1 of Fig. 2;

Fig. 3 is an end view of th rotary stud unit before attachment of the adjustable projecting element which forms a part of the unit;

Fig. 9 is a plan view of 9. adjustable projecting elementforming a part of my first form of stud unit; Fig. 10 isa section taken on the line I0--III of Fig. 9;

Fig; 11 is a view similar to Fig. 6 and showing operation of my fastener device to secure apertured members having a greater combined thickness:

Fig. 12 is a sectional view, of a stud, unit showing a modified way of securing the. adjustable element in assembly with the stud;

Fig. 13 is an end view of the installation shown Fig. 14 is a plan view of my second form of projecting element; and

device comprises two units, namely: a spring or 40' novel construction of the rotary stud unit, where- Other objects and uses of my invention will be apparent from inspection of .the drawings and specification hereinbelow set forth.

Referring to the drawings in which I have shown preferred embodiments of my invention:

Fig. 1 is a front viewof an installation secured by my first form of improved fastener device;

Fig. 15 is a section taken on the line I5-I5.

of Fit. 14. I f Referring to my first form of fastener device illustrated in Figs. 111 of the drawings, the

locking member I secured on the inner side of an inner plate 2 and a rotary unit 3 carried by an outer plate 4. The rotary unit 3 cooperates with the spring member I to secure the plates 2 and I in flat abutting engagement, as hereinafter described. The plate 2 in my preferred construction has an elongatedopening I of predetermined shape and the plate 4 has an opening 6 surrounded by a frustro-conical embossment The spring member I is of elongated shape and preferably formed from heat-treatedmetal to provide toughness and resilience. The spring member has a central embossed portion 8 (Fig. 2) divided by a slot 8 which extends to substantiallyopposite ends of the spring. The slot 9 provides a large central opening Ill :(Fig. 3) in registration with the opening of the plate 2 to receive a portion of the rotary unit in final assembly of the parts. The embossed portion 8 is shaped in a way to provide opposed cam portions and opposed detent portions l2|2 (Figs. 2, 6, and '1). Stop portions l3 are provided on opposite sldes of the detents |2--|2 from the inclined surfaces The spring member isassembled with the inner plate 2 by means of a pair of rivets. each of which has a head |4 overlying the spring member, a shank l5 extending through the slot 9 of the spring member at a respective end thereof and a shoulder l8 abutting the innor surface I 'l of the plate 2. A neck portion l8 forming a continuation of the shank l5 extends through an opening of the plate 2 and has a head l9 disposed within a countersunk opening of the plate 2, as most clearly shown in Fig. 6. Thus, the rivets cooperate with the spring member in a way to hold it in attachment to the scribed. The central portion has a circular opening 34 and slots 35 on opposed sides of the circular opening 34 extending into the respective elements 32, as shown in Fig. 9. The disk provides arc-shaped portions 36 immediately adjacent the central opening 34 and the walls of the portions 36 are threaded as at 31 (Fig. 10) for cooperative ing 38 is spaced a predetermined distanced-tom plate 2 while permitting a certain amount of gagement with the end 28 lying substantially flush with the outer surface 22 of the plate memher 4, as most clearly shown in Figs. 6 and '7. A shank extends from the stud head having an annular threaded portion 23 adjacent the head. The outside diameter of the threaded portion is less than the diameter of the inner end 2| of the stud head whereby. the inner end 2| provides a face'or shoulder 24 (Fig. 8) surrounding the the elements 32 cireumferentially of the central with the axis of the pin 21 when the opening 33 isin alignment with one of. the stud openings 25 Assembly of the rotary unit 3 with the outer plate 4 is a simple matter and is "carried out through inserting the nose 28 and the pin 21 through the opening 6 of the plate 4 byte. tipping action. Thereafter, the disk element 28iis moved over the free end of the nose and thepin 21 by registering the ends 29 of the element: 21 with the slots 35 of the disk element. The disk element is then moved into engagement, with the threaded portion 23 of the stud shank and turned to engage the threads 31 with the threads 23 of the stud shank and relative rotation of the parts is continued until the lower surface 3| of the disk element is spaced from the shoulder 24' of the stud head, a distance approximately equal to the combined thicknesses of the'plates 2 and 4. When the disk element is'in approximately the proper spaced position relative to the shoulder 24 the opening 38 thereof is aligned with one of the openings 25 of the stud head. This will threaded portion 23 adjacent its Junction with the end 2|. The stud head has a pair of openings 25 spaced apart 180 and extending axially of the stud unitfrom the shoulder 24 in the direction of the outer end for a purpose to be described. A nose 28 extends from the threaded portion 23 and is adapted to project through the enlarged portion III of the slot 9 of the spring member during assembly of the parts of the fastener device. The stud unit carries upper and lower laterally projecting elements 21 and 28 respectively and these elements are spaced one from another lengthwise of the stud unit. The upper element 21 is preferably in the form of a pin driven through the nose 23 and providing ends 29 projecting laterally on opposite sides of the nose 26. The lower element or looking member 28 is adjustable along the length of the shank and is adapted to be secured to the shank at varying spaced distances from the stud head for a purpose to be described. The openings 'are positioned circumferentially of the ends 28 in predetermined position relative to the axis of the pin element 21 for a purpose to be described.

Referring in detail to the lower element 523, my preferred form is in the shape of an elongated disk having flat upper and lower surfaces and 3| (Fig. 10). The disk, in my first form, has a generally circular central portion and rovides laterally projecting elements 32 on ametrically opposed sides of the central portion. The elements 32 may have a slight radius 33 (Fig. 7) on the lower surface 3| adjacent the outermost ends thereof for a purpose to be decause the axis ofthe disk element to register with the axis of the pirr 31. Thereafter, a pin 39 is moved into the aligned openings to engage the walls of the openings in a drive-fit, thereby prohibiting. further rotation of the disk member in either direction and fastening the parts in seabuts the shoulder 24 of the stud head, as most clearly shown in Fig. 6. In Fig. 11 I have shown an installation which is similar to that of Figs. 6 and '7, but providing plates 2 and 4 which have a greater combined thickness: As a result the disk element, instead of resting upon the shoulder 24 of the stud head in final. assembly in the manner of the installation of Fig. 6, will be spaced from the shoulder to compensate for the increased thickness.

To assemble the plates 2 and 4 by means of my improved fastener it is only necessary to bring the plates into superposed position with the aperture 6 of the plate 4 in substantial alignment with the aperture 5 of the plate 2. During this operation the nose 26 of the stud unit passes through the aperture 5 of the plate 2 and the opening Ill of the spring member I. If the disk element 28 is in alignment with the opening 5 the pin element 21 will fall into registration with the slot 8 of the spring member, but if the parts are not in alignment rotation of the stud unit by inserting a suitable tool in the slot 40 (Fig. 1) will bring them into alignment. Conlocked position and is tive moveme locked in en the disk elcme\t inner surface l1 any appreciable movement I threaded portion which has a diameter tially less than the pin 45, and the disk toengage the cam portions ll-il or the spring member land the spring until the pin ends reach the respective detent portions li -i2. The fastener is now in unlocking by the tension of the spring member against the' pin element 21. During this'rotat by which thepin element 21 is,

gement with the spring member 28 rotates into the position 6 and 7. The projection elelsk element bear against the the plate 2 with the result that the plate me bers 2 and 4 are held between the outermot end portionof the stud head and the disk element, thereby preventing of the plates flatwise It will be seen that the shown in Figs. ments 32 of the away from each other.

radii 33 provided on th fprojecting elements 32.

of the disk member mayoperate as cams to facilitate the movement of the disk element into superposed locked engagement with the inner "surface I! of the inner plate 2;

In Figs. 12-15 I have illustrated a modifiedv form of rotary unit which may offer some advan tagesover the first form, My second form of stud unit is designed for cooperative fastener engagement with a spring member similar to that shown in Fig. 2, but which may have differentdimensions to conform to the altered dimensions provided by certain elements of the rotary unit.

My second form of rotary unit has a stud member providing a head having an enlarged outer 42 of adiameter less end 4| and an inner end than the opening of the outer plate through which it is to extend. 2A shank extends from the stud head, having a threaded portion 43 of a greater diameter than the threaded portion of my first form. -A nose 44 extends from the V substandiameter of the threaded portion for apurpose to be described. Tnestud unit carries a pair of projecting elements 45 and 48 respectively which are spaced axially of the shank in the manner of the projecting elements of my first form. The projecting element 45 is in the form of a pin carried by the nose 44 and having end portions 41 projecting on opposite sides of the nose. The length of the pinv 45 is less than the rootydiameter of the threaded portion 4! for a purpose to be described. The element 46 is generally disk-shaped, but is constructed slightlyfidiiferently ment of my form in order to increase the strength of the same. The disk comprises a circular central portion 48 and projecting elements 49 on opposed sides of the central portion. The disk has a central opening 50 which provides a larger diameter than the length of the pin 45. The wall of the disk element adjacent the opening iii is threaded, as at for cooperative thi'ieaded en'gagement with the threaded portion 43 or thestud shank. p l p In assembling my second formof rotary unit with the outer plate 2 the shank of the unit is moved through the openingi of the outer plate. After this action the disk element 45 is moved over the stud nose and down into engagement with the threaded portion 43. As a result of this effect the opening 50 of the threaded portion has a greater diameter than the length of the member is easily slipped over the pin to engage the threaded portion 43.

from the disk elewill thus be compressed held against accidental threads of the portion 43,

relative flatwise movement disk elementand stud head for preventing Idl tive rotation in the manner of my first form. I

have chosen to secure the disk element of my second formagainst rotation by striking the disk element with a suitable tool adjacent the opening 50 as at 51 (Figs. 12 and 13) so as to deform the wall of the opening 50 and force a portion 52- 01 the wall into binding engagement with the thereby preventing rotation of the disk element in either direction. My second form of disk member omits the slots of my first form, thereby providing a continuous annular thread and,-at the same time, effecting a stronger member. 1

Thus, my fastener devices operate to prevent of the plates to be secured and, at the same time, the devices are capable of compensating for variouscombined thicknesses of the plates to be secured: by adjusting the disk element nearest the headcoutemporaneously with the assembly of the rotary unit with the outer plate member. 3

Although I have illustrated anddescribed the preferred embodiments of my invention I do not wish to be limited thereby because the scope of my invention is best defined by the following claims.

I claim: 4 i 1. In a fastener device of the rotary operative type, a plurality of apertured members to be tening pm ition therebyto.

fastened together, a stud unit having a shank passing through the said members, a locking member carried by said shank, said locking member-projecting laterally from said shank and,

overlying the inner surface of the inner aper-; tured member when the stud is turned to fasf hold all of the aperff tured'members inclose face-to-face engagement,

' type, a plurality of apertured a part of the stud said. locking member. having an opening receiving an end of vsaid shank whereby said locking member is assembled with said shank over an end thereof and interengaging means formed as unit and cooperating to secure said locking member in predetermined position 2. In a fastenerdevice of the rotary vt aperative mem rs to be fastened together, a stud unit havin ga shank passing through the said members/ said shank having a threaded portion, a lockingmember carried by said shank, said locking/member having an element projecting laterally from said shank and overlying the inner urface of the inner apertured member when thestud is turned to fastening position thereby to[ hold all of the aperturedmembers in close face to-face engageving a threaded portion cooperating with said threaded portion of said shank to effect. adjust ent of said locking member lengthwise of said shank by relative rotation of said parts. p

3. In a fastener device of the rotary operative type, a plurality of apertured members to be fastened together, a stud unit having ,ashank passing through the said members, said shank having an externally threaded portion, a locking member carried by said shank, said locking member having an element projecting laterally from said shank and overlying the inner'surface of the inner apertured member when the stud is turned to fastening position thereby to hold in threaded engagement.

'4. In a fastener device of the rotary operative type, a plurality of apertured members to be fastened together, a stud unit having a shank passing through the said members, said shank having an externally threaded portion, a locking member carried by said shank, said locking member having an element projecting laterally from said shank and overlying the inner surface of the inner apertured member when the I stud'is turned to fastening position thereby to hold all of the apertured members in close faceto-face engagement, said locking member having an opening and a wall adjacent said opening having a thread, said locking member receiving an end of said shank through said opening and movable into predetermined position lengthwise of said shank by relative rotation of said parts in threaded engagement and said shank and locking member having cooperating means maintaining said parts in predetermined position against relative rotation.

5. In a fastener device of the rotary operative type, a plurality of apertured members to be fastened together, a stud. unit having a head bearing against the outer surface of one apertured member and a shank extending through all of said apertured members, a pair of lateral projections carried by said shank and disposed in spaced relation lengthwise of said shank, one of said projections overlying the inner surface of the inner apertured member when the stud is turned to fastening position thereby to hold all of the apertured members in close face-toface engagement, stud-holding means located at the inner face of the installation engaging said other projection to hold the stud in fastening position while permitting release by positive rotation of the said stud, and one of said projections having means cooperating with said stud unit so as to be shiftable to varying positions along the length of said shank thereby to compensate for various thicknesses of said apertured.

members.

6. In a rotary fastener for use in an installation of the class described, a stud member having a head provided with means by which the stud may be rotated, a pair of laterally projecting elements carried by said stud membenthe first of said elements being spaced from said head and adapted to cooperate with said head to lock the parts of the installation against substantial separating movement, said stud member and said first element having co-engaging threads whereby said parts are assembled together, and a sec- 0nd part of the fastener having means for cooperation with the second of said elements to hold the stud in installation-locking position.

7. In a rotary fastener for use in an installation of the class described, a stud member having a head provided with means by which the stud may be rotated and a shank, said shank having an external threaded portion, an element carried by said shank having projections extending laterally on opposed sides of said shank, said element beirg spaced from said head, and a second element carried by said shank intermediate said element and second element receiving an end of said shank and said lateral projections of said first element through said opening and being thereafter screwed into predetermined position lengthwise of said shank.

8. In a rotary fastener for usein an installation of the class described, a stud member having a head provided with means by which the stud may be rotated and a shank, said shank having an external threaded portion, a crosspin carried by said shank having end portions extending laterally on opposed sides of said shank, said crosspin being spaced from said head, and a second element carried by said shank intermediate said crosspin and said head and having laterally extending projections, said second element having an opening to clear said end portions of said crosspin and a wall adjacent said opening having a thread for co-engagement with said threaded portion of said stud unit, said second element receiving an end of said shank and said end portions of said crosspin through said opening and thereafter screwed into predetermined position lengthwise of said shank and said second element and stud unit having cooperating locking means engaging to limit ro tation of one part relative to the other after said second element is disposed in final position.

9. In a fastener device of the rotary operative type, a plurality of apertured members to be fastened together, a stud unit having a head on one side of said apertured members and a shank passing through the said members, said shank having'a threaded portion adjacent said head, a locking member carried by said shank, said lockingmember having an element projecting laterally from said shank and overlying the inner surface of the inner apertured member when the stud is turned 'to fastening position-thereby to hold all of theapertured members in close faceto-face engagement, said locking member having tened together, a stud unit having a head on one side of said apertured members and a shank passing through the said members, said shank having a threaded portion adjacent said head, a locking member carried by said shank, said locking member having an element projecting laterally from said shank and overlying the inner surface of the inner apertured member when the stud is turned to fastening position thereby to hold all of the apertured members in close face-to-face engagement, said locking member having a threaded portion cooperating with said threaded portion of said shank to effect adjustment of said locking member lengthwise of said shank by relative rotation of said parts, and said locking member and threaded portion having c0-engaging means to maintain said parts in fixed relative position.

FRANK E. JOHNSON.

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